Odpowiedź:
|AB|=3cm
|BC|=7cm
|CD|=4cm
|DE|=6cm
|EF|=7cm (bo tyle samo, co AB)
|FG|=6cm (bo tyle samo, co DE)
|GA|=5cm
|GB|=4cm (bo tyle samo, co CD)
Szczegółowe wyjaśnienie:
a) ACEFG: |AC|+|CE|+|EF|+|FG|+|GA| = |AB|+|BC|+|CD|+|DE|+|EF|+|FG|+|GA| = 3cm+7cm+4cm+6cm+7cm+6cm+5cm=38cm
b) BCDG: 2·|BC|+2·|CD| = 2·7cm+2·4cm = 14cm+8cm = 22cm
c) ABG: |AB|+|BG|+|GA| = 3cm+4cm+5cm = 12cm
d) ACDG: |AC|+|CD|+|DG|+|GA| = |AB|+|BC|+|CD|+|DG|+|GA| = 3cm+7cm+4cm+7cm+5cm = 26cm
e) BCEF: 2·|BC|+2·|CE| = 2·|BC|+2·(|CD|+|DE|) = 2·7cm+2·(4cm+6cm) = 14cm+2·10cm = 14cm+20cm = 34cm
f) GDEF: 2·|DE|+2·|EF| = 2·6cm+2·7cm = 12cm+14cm = 26cm
